VANGUARD GROUP INC 13D and 13G filings for Amentum Holdings, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-03-26 3:25 pm Sale | 2026-03-13 | 13G | AMENTUM HLDGS INC AMTM | VANGUARD GROUP INC | 0 0.000% | -16,542,447 (Position Closed) | Filing |
| 2025-01-30 8:09 pm Purchase | 2024-12-31 | 13G | AMENTUM HLDGS INC AMTM | VANGUARD GROUP INC | 16,542,447 6.790% | 2,529,173 (+18.05%) | Filing |
| 2024-11-12 1:25 pm Unchanged | 2024-09-30 | 13G | AMENTUM HLDGS INC AMTM | VANGUARD GROUP INC | 14,013,274 9.140% | 0 (Unchanged) | Filing |
| 2024-11-04 10:22 am Purchase | 2024-09-30 | 13G | AMENTUM HLDGS INC AMTM | VANGUARD GROUP INC | 14,013,274 9.140% | 14,013,274 (New Position) | Filing |